from The Century Dictionary.

  • noun A direct-acting hammer where the hammer-block is lifted vertically, either by cams or friction-rollers, or, as is more commonly the case, by steam- or water-pressure acting on a piston in a closed cylinder.


Sorry, no etymologies found.


  • I have set Webb to work to try it with the little engine and a stamp-hammer of 60 lbs. weight.

    James Watt


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